/* ============================================
   SISTEMA DE CORREOS P24M - DISEÑO PROFESIONAL
   ============================================ */

/* Variables y Reset */
:root {
    /* Modo Claro */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-hover: #e2e8f0;
    --bg-active: #dbeafe;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-muted: #94a3b8;
    
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    
    --accent-primary: #3b82f6;
    --accent-primary-hover: #2563eb;
    --accent-primary-light: #dbeafe;
    --accent-secondary: #8b5cf6;
    
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #06b6d4;
    --info-light: #cffafe;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
}

/* Modo Oscuro */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-hover: #475569;
    --bg-active: #1e3a5f;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;
    
    --border-light: #334155;
    --border-medium: #475569;
    
    --accent-primary-light: #1e3a5f;
    --success-light: #064e3b;
    --warning-light: #78350f;
    --danger-light: #7f1d1d;
    --info-light: #164e63;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LAYOUT PRINCIPAL
   ============================================ */

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--accent-primary);
}

/* Navegación Sidebar */
.sidebar-nav {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.925rem;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-primary-light);
    color: var(--accent-primary);
}

.nav-item-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.nav-item-badge {
    margin-left: auto;
    background: var(--accent-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-full);
    min-width: 20px;
    text-align: center;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border-light);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    border: none;
    width: 100%;
}

.theme-toggle:hover {
    background: var(--bg-hover);
}

.theme-toggle-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.theme-switch {
    width: 44px;
    height: 24px;
    background: var(--border-medium);
    border-radius: var(--radius-full);
    position: relative;
    transition: background var(--transition-fast);
}

.theme-switch::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: white;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: transform var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .theme-switch {
    background: var(--accent-primary);
}

[data-theme="dark"] .theme-switch::after {
    transform: translateX(20px);
}

/* ============================================
   CONTENIDO PRINCIPAL
   ============================================ */

.main-content {
    flex: 1;
    margin-left: 280px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Principal */
.main-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
}

.menu-toggle:hover {
    background: var(--bg-hover);
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.page-subtitle {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: 0.125rem;
}

/* Barra de búsqueda */
.search-container {
    flex: 1;
    max-width: 500px;
    margin: 0 2rem;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 0 1rem;
    transition: all var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-light);
}

.search-icon {
    color: var(--text-muted);
    margin-right: 0.75rem;
}

.search-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.75rem 0;
    font-size: 0.925rem;
    color: var(--text-primary);
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-shortcut {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: monospace;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.icon-btn .notification-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: 50%;
    border: 2px solid var(--bg-secondary);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    padding-right: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--transition-fast);
    text-decoration: none;
}

.user-menu:hover {
    background: var(--bg-hover);
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-name {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

/* ============================================
   CONTENIDO DE PÁGINA
   ============================================ */

.page-content {
    flex: 1;
    padding: 2rem;
}

/* Container legacy */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.blue { background: var(--accent-primary-light); }
.stat-icon.green { background: var(--success-light); }
.stat-icon.yellow { background: var(--warning-light); }
.stat-icon.purple { background: #ede9fe; }

[data-theme="dark"] .stat-icon.purple { background: #3b2670; }

.stat-trend {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.stat-trend.up { color: var(--success); }
.stat-trend.down { color: var(--danger); }

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: 0.25rem;
}

/* ============================================
   TABLA DE CORREOS
   ============================================ */

.emails-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.emails-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.emails-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.emails-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-medium);
}

.filter-btn.active {
    background: var(--accent-primary-light);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Lista de Correos */
.email-list {
    max-height: calc(100vh - 400px);
    overflow-y: auto;
}

.email-item {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.email-item:hover {
    background: var(--bg-hover);
}

.email-item.unread {
    background: var(--accent-primary-light);
}

.email-item.unread:hover {
    background: var(--bg-active);
}

.email-checkbox {
    margin-right: 1rem;
}

.email-checkbox input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-primary);
}

.email-star {
    margin-right: 1rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.email-star:hover,
.email-star.starred {
    color: var(--warning);
}

.email-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

.email-content {
    flex: 1;
    min-width: 0;
}

.email-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.25rem;
}

.email-sender {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.email-item.unread .email-sender {
    font-weight: 700;
}

.email-time {
    font-size: 0.8125rem;
    color: var(--text-muted);
    white-space: nowrap;
    margin-left: 1rem;
}

.email-subject {
    font-size: 0.925rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.25rem;
}

.email-item.unread .email-subject {
    color: var(--text-primary);
    font-weight: 500;
}

.email-preview {
    font-size: 0.8125rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.email-tags {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
}

.email-tag {
    padding: 0.25rem 0.625rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.email-tag.attachment {
    background: var(--info-light);
    color: var(--info);
}

.email-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.email-item:hover .email-actions {
    opacity: 1;
}

.email-action-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.email-action-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.email-action-btn.delete:hover {
    background: var(--danger-light);
    color: var(--danger);
    border-color: var(--danger);
}

/* ============================================
   BOTONES
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.925rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-primary-hover);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-medium);
}

.btn-outline {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.btn-outline:hover {
    background: var(--accent-primary-light);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
}

.btn-block {
    width: 100%;
}

/* ============================================
   FORMULARIOS
   ============================================ */

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.925rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-light);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-light);
    background: var(--bg-tertiary);
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: var(--accent-primary-light);
    color: var(--accent-primary);
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger);
}

.badge-info {
    background: var(--info-light);
    color: var(--info);
}

/* ============================================
   VISTA DE CORREO
   ============================================ */

.email-view {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.email-view-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
}

.email-view-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.email-view-subject {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.email-view-meta {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.email-view-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.email-view-info {
    flex: 1;
}

.email-view-from {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.email-view-to {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.email-view-date {
    font-size: 0.875rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.email-view-body {
    padding: 2rem;
    min-height: 300px;
}

.email-view-body img {
    max-width: 100%;
    height: auto;
}

/* Adjuntos */
.attachments-section {
    padding: 1.5rem;
    border-top: 1px solid var(--border-light);
    background: var(--bg-tertiary);
}

.attachments-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.attachments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.attachment-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.attachment-item:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.attachment-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    font-size: 1.25rem;
}

.attachment-info {
    flex: 1;
    min-width: 0;
}

.attachment-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.attachment-size {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   BÚSQUEDA AVANZADA
   ============================================ */

.advanced-search {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.advanced-search-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.advanced-search-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.advanced-search-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.search-filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.search-filter-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ============================================
   NOTIFICACIONES
   ============================================ */

.notification-toast {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    max-width: 400px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    z-index: 1000;
    animation: slideIn 0.3s ease;
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s ease;
}

.notification-toast.show {
    transform: translateX(0);
    opacity: 1;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notification-icon.success {
    background: var(--success-light);
    color: var(--success);
}

.notification-icon.error {
    background: var(--danger-light);
    color: var(--danger);
}

.notification-icon.info {
    background: var(--info-light);
    color: var(--info);
}

.notification-content {
    flex: 1;
}

.notification-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.notification-message {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.notification-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
}

.notification-close:hover {
    color: var(--text-primary);
}

/* ============================================
   LOGIN PAGE
   ============================================ */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: var(--radius-xl);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1rem;
    color: white;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.login-subtitle {
    font-size: 0.925rem;
    color: var(--text-tertiary);
}

.login-form {
    margin-top: 2rem;
}

.code-input {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.5rem;
    padding: 1rem;
    text-transform: uppercase;
}

.login-info {
    margin-top: 2rem;
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.login-info-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.login-info-list {
    list-style: none;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.login-info-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.login-info-list li::before {
    content: '→';
    color: var(--accent-primary);
}

/* ============================================
   ALERTAS
   ============================================ */

.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.alert-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.alert-message {
    font-size: 0.875rem;
}

.alert-success {
    background: var(--success-light);
    color: var(--success);
}

.alert-error {
    background: var(--danger-light);
    color: var(--danger);
}

.alert-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.alert-info {
    background: var(--info-light);
    color: var(--info);
}

/* Flash Messages Legacy */
.flash-messages {
    margin-bottom: 1.5rem;
}

.flash-message {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.flash-message.success {
    background: var(--success-light);
    color: var(--success);
}

.flash-message.error {
    background: var(--danger-light);
    color: var(--danger);
}

.flash-message.info {
    background: var(--info-light);
    color: var(--info);
}

/* ============================================
   EMPTY STATE
   ============================================ */

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state-message {
    font-size: 0.925rem;
    color: var(--text-tertiary);
    max-width: 400px;
    margin: 0 auto 1.5rem;
}

/* ============================================
   MODAL
   ============================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* ============================================
   LOADING & SKELETON
   ============================================ */

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-hover) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
}

.loading-text {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.925rem;
}

/* ============================================
   TABLA
   ============================================ */

.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--bg-hover);
}

.table td {
    font-size: 0.925rem;
}

/* ============================================
   PAGINACIÓN
   ============================================ */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1.5rem;
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.pagination-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-medium);
}

.pagination-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    padding: 0 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   INBOX ESPECÍFICO
   ============================================ */

.inbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.inbox-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.inbox-filters {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.inbox-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.inbox-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-tertiary);
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.email-count {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   DASHBOARD
   ============================================ */

.dashboard-header {
    margin-bottom: 2rem;
}

.welcome-text {
    font-size: 0.925rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.dashboard-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1.5rem;
}

.dashboard-card {
    grid-column: span 4;
}

.dashboard-card.wide {
    grid-column: span 8;
}

.dashboard-card.full {
    grid-column: span 12;
}

@media (max-width: 1200px) {
    .dashboard-card {
        grid-column: span 6;
    }
    .dashboard-card.wide {
        grid-column: span 12;
    }
}

@media (max-width: 768px) {
    .dashboard-card,
    .dashboard-card.wide {
        grid-column: span 12;
    }
}

/* ============================================
   NAVBAR LEGACY (para compatibilidad)
   ============================================ */

.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-links a {
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-links a:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-links a.active {
    background: var(--accent-primary-light);
    color: var(--accent-primary);
}

/* ============================================
   SESSION EXPIRATION BANNER
   ============================================ */

.session-banner {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    border: 1px solid var(--warning);
    border-radius: var(--radius-lg);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateX(-50%) translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

.session-banner-icon {
    color: var(--warning);
    font-size: 1.25rem;
}

.session-banner-text {
    font-size: 0.925rem;
    color: var(--text-primary);
}

.session-banner-time {
    font-weight: 700;
    color: var(--warning);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .search-container {
        display: none;
    }
    
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .sidebar-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}

@media (max-width: 768px) {
    .page-content {
        padding: 1rem;
    }
    
    .container {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .email-item {
        padding: 1rem;
    }
    
    .email-preview,
    .email-tags {
        display: none;
    }
    
    .main-header {
        padding: 1rem;
    }
    
    .header-actions {
        gap: 0.5rem;
    }
    
    .user-name {
        display: none;
    }
    
    .page-title {
        font-size: 1.25rem;
    }
    
    .inbox-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .inbox-filters {
        width: 100%;
        overflow-x: auto;
    }
    
    .advanced-search-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 1.5rem;
    }
    
    .code-input {
        font-size: 1.25rem;
        letter-spacing: 0.25rem;
    }
    
    .btn {
        width: 100%;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ============================================
   UTILITIES
   ============================================ */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.ml-1 { margin-left: 0.5rem; }
.ml-2 { margin-left: 1rem; }
.mr-1 { margin-right: 0.5rem; }
.mr-2 { margin-right: 1rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.hidden { display: none !important; }
.visible { display: block; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.cursor-pointer { cursor: pointer; }
.select-none { user-select: none; }

/* Link styles */
a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-primary-hover);
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--accent-primary-light);
    color: var(--accent-primary);
}